<?php
/*
 * Copyright (c) 2013 Eugene Kuzmenko
 *
 * Permission  is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in  the Software without restriction, including without limitation the rights
 * to  use,  copy,  modify,  merge, publish, distribute, sublicense, and/or sell
 * copies  of  the  Software,  and  to  permit  persons  to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The  above  copyright  notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE  IS  PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED,  INCLUDING  BUT  NOT  LIMITED  TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS  FOR  A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS  OR  COPYRIGHT  HOLDERS  BE  LIABLE  FOR  ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 * For more information, see <http://www.aljey.com>.
 */

namespace Al\HTTP\Lib\Vars;

use Al\Core\Lib\ParameterHolder;

/**
 * Provides an array-like wrapper for $_COOKIE.
 * 
 * @author Eugene Kuzmenko <mail@aljey.com>
 */
class Cookie extends ParameterHolder {
  
  /**
   * {@inheritDoc}
   */
  public function __construct() {
    parent::__construct($_COOKIE);
  }
  
  /**
   * {@inheritDoc}
   * Following the AlWEB philosophy all the storage is permanent, with no
   * expiration date. The only way to remove a value from storage is to "unset"
   * it from the "storage array". Hence cookies are stored for 365 days, which
   * is a large enough duration to be considered non-expiring.
   */
  public function offsetSet($offset, $value) {
    if (is_string($offset) && strlen($offset)) {
      setcookie($offset, $value, time() + 60 * 60 * 24 * 365, '/',
        $_SERVER['SERVER_NAME']);
    }
    parent::offsetSet($offset, $value);
  }
  
  /**
   * {@inheritDoc}
   */
  public function offsetUnset($offset) {
    setcookie($offset, '', time() - 3600, '/', $_SERVER['SERVER_NAME']);
    parent::offsetUnset($offset);
  }
  
}